Found this on another website - may be useful to some!!

--> TAKE THE MYSTERY OUT OF WINDOWS ERROR MESSAGES
Windows is notorious for opaque error messages. What could be
worse than an illegal operation message with numbers and references
to the "kernel?" Yikes! It's OK, you can figure them out, maybe.

There are at least two programs that will help you interpret these
messages. Both WinErr 1.0 and MS Windows Error Messages are free.
They're available at, respectively:
http://camtech2000.net/Pages/WinErrs.html
http://www.gregorybraun.com/